2556342402 has 16 divisors (see below), whose sum is σ = 5288984640. Its totient is φ = 822730832.

The previous prime is 2556342359. The next prime is 2556342409. The reversal of 2556342402 is 2042436552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2556342409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7345638 + ... + 7345985.

It is an arithmetic number, because the mean of its divisors is an integer number (330561540).

Almost surely, 2^2556342402 is an apocalyptic number.

2556342402 is an abundant number, since it is smaller than the sum of its proper divisors (2732642238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2556342402 is a wasteful number, since it uses less digits than its factorization.

2556342402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14691657.

The product of its (nonzero) digits is 57600, while the sum is 33.

The square root of 2556342402 is about 50560.2848291028. The cubic root of 2556342402 is about 1367.3289463385.

Adding to 2556342402 its reverse (2042436552), we get a palindrome (4598778954).

The spelling of 2556342402 in words is "two billion, five hundred fifty-six million, three hundred forty-two thousand, four hundred two".